Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 572 insertions, 0 deletions

diff --git a/sound/i2c/cs8427.c b/sound/i2c/cs8427.c
new file mode 100644
index 000000000000..a3fda859dd15
--- /dev/null
+++ b/sound/i2c/cs8427.c
@@ -0,0 +1,572 @@
+/*
+ *  Routines for control of the CS8427 via i2c bus
+ *  IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/cs8427.h>
+#include <sound/asoundef.h>
+
+static void snd_cs8427_reset(snd_i2c_device_t *cs8427);
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic");
+MODULE_LICENSE("GPL");
+
+#define CS8427_ADDR                     (0x20>>1) /* fixed address */
+
+typedef struct {
+        snd_pcm_substream_t *substream;
+        char hw_status[24];             /* hardware status */
+        char def_status[24];            /* default status */
+        char pcm_status[24];            /* PCM private status */
+        char hw_udata[32];
+        snd_kcontrol_t *pcm_ctl;
+} cs8427_stream_t;
+
+typedef struct {
+        unsigned char regmap[0x14];     /* map of first 1 + 13 registers */
+        unsigned int rate;
+        unsigned int reset_timeout;
+        cs8427_stream_t playback;
+        cs8427_stream_t capture;
+} cs8427_t;
+
+static unsigned char swapbits(unsigned char val)
+{
+        int bit;
+        unsigned char res = 0;
+        for (bit = 0; bit < 8; bit++) {
+                res <<= 1;
+                res |= val & 1;
+                val >>= 1;
+        }
+        return res;
+}
+
+int snd_cs8427_reg_write(snd_i2c_device_t *device, unsigned char reg, unsigned char val)
+{
+        int err;
+        unsigned char buf[2];
+
+        buf[0] = reg & 0x7f;
+        buf[1] = val;
+        if ((err = snd_i2c_sendbytes(device, buf, 2)) != 2) {
+                snd_printk("unable to send bytes 0x%02x:0x%02x to CS8427 (%i)\n", buf[0], buf[1], err);
+                return err < 0 ? err : -EIO;
+        }
+        return 0;
+}
+
+static int snd_cs8427_reg_read(snd_i2c_device_t *device, unsigned char reg)
+{
+        int err;
+        unsigned char buf;
+
+        if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
+                snd_printk("unable to send register 0x%x byte to CS8427\n", reg);
+                return err < 0 ? err : -EIO;
+        }
+        if ((err = snd_i2c_readbytes(device, &buf, 1)) != 1) {
+                snd_printk("unable to read register 0x%x byte from CS8427\n", reg);
+                return err < 0 ? err : -EIO;
+        }
+        return buf;
+}
+
+static int snd_cs8427_select_corudata(snd_i2c_device_t *device, int udata)
+{
+        cs8427_t *chip = device->private_data;
+        int err;
+
+        udata = udata ? CS8427_BSEL : 0;
+        if (udata != (chip->regmap[CS8427_REG_CSDATABUF] & udata)) {
+                chip->regmap[CS8427_REG_CSDATABUF] &= ~CS8427_BSEL;
+                chip->regmap[CS8427_REG_CSDATABUF] |= udata;
+                err = snd_cs8427_reg_write(device, CS8427_REG_CSDATABUF, chip->regmap[CS8427_REG_CSDATABUF]);
+                if (err < 0)
+                        return err;
+        }
+        return 0;
+}
+
+static int snd_cs8427_send_corudata(snd_i2c_device_t *device,
+                                    int udata,
+                                    unsigned char *ndata,
+                                    int count)
+{
+        cs8427_t *chip = device->private_data;
+        char *hw_data = udata ? chip->playback.hw_udata : chip->playback.hw_status;
+        char data[32];
+        int err, idx;
+
+        if (!memcmp(hw_data, ndata, count))
+                return 0;
+        if ((err = snd_cs8427_select_corudata(device, udata)) < 0)
+                return err;
+        memcpy(hw_data, ndata, count);
+        if (udata) {
+                memset(data, 0, sizeof(data));
+                if (memcmp(hw_data, data, count) == 0) {
+                        chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK;
+                        chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS | CS8427_EFTUI;
+                        if ((err = snd_cs8427_reg_write(device, CS8427_REG_UDATABUF, chip->regmap[CS8427_REG_UDATABUF])) < 0)
+                                return err;
+                        return 0;
+                }
+        }
+        data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF;
+        for (idx = 0; idx < count; idx++)
+                data[idx + 1] = swapbits(ndata[idx]);
+        if (snd_i2c_sendbytes(device, data, count + 1) != count + 1)
+                return -EIO;
+        return 1;
+}
+
+static void snd_cs8427_free(snd_i2c_device_t *device)
+{
+        kfree(device->private_data);
+}
+
+int snd_cs8427_create(snd_i2c_bus_t *bus,
+                      unsigned char addr,
+                      unsigned int reset_timeout,
+                      snd_i2c_device_t **r_cs8427)
+{
+        static unsigned char initvals1[] = {
+          CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC,
+          /* CS8427_REG_CONTROL1: RMCK to OMCK, valid PCM audio, disable mutes, TCBL=output */
+          CS8427_SWCLK | CS8427_TCBLDIR,
+          /* CS8427_REG_CONTROL2: hold last valid audio sample, RMCK=256*Fs, normal stereo operation */
+          0x00,
+          /* CS8427_REG_DATAFLOW: output drivers normal operation, Tx<=serial, Rx=>serial */
+          CS8427_TXDSERIAL | CS8427_SPDAES3RECEIVER,
+          /* CS8427_REG_CLOCKSOURCE: Run off, CMCK=256*Fs, output time base = OMCK, input time base =
+             recovered input clock, recovered input clock source is ILRCK changed to AES3INPUT (workaround, see snd_cs8427_reset) */
+          CS8427_RXDILRCK,
+          /* CS8427_REG_SERIALINPUT: Serial audio input port data format = I2S, 24-bit, 64*Fsi */
+          CS8427_SIDEL | CS8427_SILRPOL,
+          /* CS8427_REG_SERIALOUTPUT: Serial audio output port data format = I2S, 24-bit, 64*Fsi */
+          CS8427_SODEL | CS8427_SOLRPOL,
+        };
+        static unsigned char initvals2[] = {
+          CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC,
+          /* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence, biphase, parity status bits */
+          /* CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR, */
+          0xff, /* set everything */
+          /* CS8427_REG_CSDATABUF:
+             Registers 32-55 window to CS buffer
+             Inhibit D->E transfers from overwriting first 5 bytes of CS data.
+             Inhibit D->E transfers (all) of CS data.
+             Allow E->F transfer of CS data.
+             One byte mode; both A/B channels get same written CB data.
+             A channel info is output to chip's EMPH* pin. */
+          CS8427_CBMR | CS8427_DETCI,
+          /* CS8427_REG_UDATABUF:
+             Use internal buffer to transmit User (U) data.
+             Chip's U pin is an output.
+             Transmit all O's for user data.
+             Inhibit D->E transfers.
+             Inhibit E->F transfers. */
+          CS8427_UD | CS8427_EFTUI | CS8427_DETUI,
+        };
+        int err;
+        cs8427_t *chip;
+        snd_i2c_device_t *device;
+        unsigned char buf[24];
+
+        if ((err = snd_i2c_device_create(bus, "CS8427", CS8427_ADDR | (addr & 7), &device)) < 0)
+                return err;
+        chip = device->private_data = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+        if (chip == NULL) {
+                snd_i2c_device_free(device);
+                return -ENOMEM;
+        }
+        device->private_free = snd_cs8427_free;
+        
+        snd_i2c_lock(bus);
+        if ((err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER)) != CS8427_VER8427A) {
+                snd_i2c_unlock(bus);
+                snd_printk("unable to find CS8427 signature (expected 0x%x, read 0x%x), initialization is not completed\n", CS8427_VER8427A, err);
+                return -EFAULT;
+        }
+        /* turn off run bit while making changes to configuration */
+        if ((err = snd_cs8427_reg_write(device, CS8427_REG_CLOCKSOURCE, 0x00)) < 0)
+                goto __fail;
+        /* send initial values */
+        memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6);
+        if ((err = snd_i2c_sendbytes(device, initvals1, 7)) != 7) {
+                err = err < 0 ? err : -EIO;
+                goto __fail;
+        }
+        /* Turn off CS8427 interrupt stuff that is not used in hardware */
+        memset(buf, 0, 7);
+        /* from address 9 to 15 */
+        buf[0] = 9;     /* register */
+        if ((err = snd_i2c_sendbytes(device, buf, 7)) != 7)
+                goto __fail;
+        /* send transfer initialization sequence */
+        memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3);
+        if ((err = snd_i2c_sendbytes(device, initvals2, 4)) != 4) {
+                err = err < 0 ? err : -EIO;
+                goto __fail;
+        }
+        /* write default channel status bytes */
+        buf[0] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 0));
+        buf[1] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 8));
+        buf[2] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 16));
+        buf[3] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 24));
+        memset(buf + 4, 0, 24 - 4);
+        if (snd_cs8427_send_corudata(device, 0, buf, 24) < 0)
+                goto __fail;
+        memcpy(chip->playback.def_status, buf, 24);
+        memcpy(chip->playback.pcm_status, buf, 24);
+        snd_i2c_unlock(bus);
+
+        /* turn on run bit and rock'n'roll */
+        if (reset_timeout < 1)
+                reset_timeout = 1;
+        chip->reset_timeout = reset_timeout;
+        snd_cs8427_reset(device);
+
+#if 0   // it's nice for read tests
+        {
+        char buf[128];
+        int xx;
+        buf[0] = 0x81;
+        snd_i2c_sendbytes(device, buf, 1);
+        snd_i2c_readbytes(device, buf, 127);
+        for (xx = 0; xx < 127; xx++)
+                printk("reg[0x%x] = 0x%x\n", xx+1, buf[xx]);
+        }
+#endif
+        
+        if (r_cs8427)
+                *r_cs8427 = device;
+        return 0;
+
+      __fail:
+        snd_i2c_unlock(bus);
+        snd_i2c_device_free(device);
+        return err < 0 ? err : -EIO;
+}
+
+/*
+ * Reset the chip using run bit, also lock PLL using ILRCK and
+ * put back AES3INPUT. This workaround is described in latest
+ * CS8427 datasheet, otherwise TXDSERIAL will not work.
+ */
+static void snd_cs8427_reset(snd_i2c_device_t *cs8427)
+{
+        cs8427_t *chip;
+        unsigned long end_time;
+        int data;
+
+        snd_assert(cs8427, return);
+        chip = cs8427->private_data;
+        snd_i2c_lock(cs8427->bus);
+        chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~(CS8427_RUN | CS8427_RXDMASK);
+        snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, chip->regmap[CS8427_REG_CLOCKSOURCE]);
+        udelay(200);
+        chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RUN | CS8427_RXDILRCK;
+        snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, chip->regmap[CS8427_REG_CLOCKSOURCE]);
+        udelay(200);
+        snd_i2c_unlock(cs8427->bus);
+        end_time = jiffies + chip->reset_timeout;
+        while (time_after_eq(end_time, jiffies)) {
+                snd_i2c_lock(cs8427->bus);
+                data = snd_cs8427_reg_read(cs8427, CS8427_REG_RECVERRORS);
+                snd_i2c_unlock(cs8427->bus);
+                if (!(data & CS8427_UNLOCK))
+                        break;
+                set_current_state(TASK_UNINTERRUPTIBLE);
+                schedule_timeout(1);
+        }
+        snd_i2c_lock(cs8427->bus);
+        chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~CS8427_RXDMASK;
+        chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RXDAES3INPUT;
+        snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, chip->regmap[CS8427_REG_CLOCKSOURCE]);
+        snd_i2c_unlock(cs8427->bus);
+}
+
+static int snd_cs8427_in_status_info(snd_kcontrol_t *kcontrol,
+                                     snd_ctl_elem_info_t *uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 255;
+        return 0;
+}
+
+static int snd_cs8427_in_status_get(snd_kcontrol_t *kcontrol,
+                                    snd_ctl_elem_value_t *ucontrol)
+{
+        snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
+        int data;
+
+        snd_i2c_lock(device->bus);
+        data = snd_cs8427_reg_read(device, kcontrol->private_value);
+        snd_i2c_unlock(device->bus);
+        if (data < 0)
+                return data;
+        ucontrol->value.integer.value[0] = data;
+        return 0;
+}
+
+static int snd_cs8427_qsubcode_info(snd_kcontrol_t *kcontrol,
+                                    snd_ctl_elem_info_t *uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
+        uinfo->count = 10;
+        return 0;
+}
+
+static int snd_cs8427_qsubcode_get(snd_kcontrol_t *kcontrol,
+                                   snd_ctl_elem_value_t *ucontrol)
+{
+        snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
+        unsigned char reg = CS8427_REG_QSUBCODE;
+        int err;
+
+        snd_i2c_lock(device->bus);
+        if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
+                snd_printk("unable to send register 0x%x byte to CS8427\n", reg);
+                snd_i2c_unlock(device->bus);
+                return err < 0 ? err : -EIO;
+        }
+        if ((err = snd_i2c_readbytes(device, ucontrol->value.bytes.data, 10)) != 10) {
+                snd_printk("unable to read Q-subcode bytes from CS8427\n");
+                snd_i2c_unlock(device->bus);
+                return err < 0 ? err : -EIO;
+        }
+        snd_i2c_unlock(device->bus);
+        return 0;
+}
+
+static int snd_cs8427_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+        uinfo->count = 1;
+        return 0;
+}
+
+static int snd_cs8427_spdif_get(snd_kcontrol_t * kcontrol,
+                                snd_ctl_elem_value_t * ucontrol)
+{
+        snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
+        cs8427_t *chip = device->private_data;
+        
+        snd_i2c_lock(device->bus);
+        memcpy(ucontrol->value.iec958.status, chip->playback.def_status, 24);
+        snd_i2c_unlock(device->bus);
+        return 0;
+}
+
+static int snd_cs8427_spdif_put(snd_kcontrol_t * kcontrol,
+                                snd_ctl_elem_value_t * ucontrol)
+{
+        snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
+        cs8427_t *chip = device->private_data;
+        unsigned char *status = kcontrol->private_value ? chip->playback.pcm_status : chip->playback.def_status;
+        snd_pcm_runtime_t *runtime = chip->playback.substream ? chip->playback.substream->runtime : NULL;
+        int err, change;
+
+        snd_i2c_lock(device->bus);
+        change = memcmp(ucontrol->value.iec958.status, status, 24) != 0;
+        memcpy(status, ucontrol->value.iec958.status, 24);
+        if (change && (kcontrol->private_value ? runtime != NULL : runtime == NULL)) {
+                err = snd_cs8427_send_corudata(device, 0, status, 24);
+                if (err < 0)
+                        change = err;
+        }
+        snd_i2c_unlock(device->bus);
+        return change;
+}
+
+static int snd_cs8427_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+        uinfo->count = 1;
+        return 0;
+}
+
+static int snd_cs8427_spdif_mask_get(snd_kcontrol_t * kcontrol,
+                                      snd_ctl_elem_value_t * ucontrol)
+{
+        memset(ucontrol->value.iec958.status, 0xff, 24);
+        return 0;
+}
+
+static snd_kcontrol_new_t snd_cs8427_iec958_controls[] = {
+{
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .info =         snd_cs8427_in_status_info,
+        .name =         "IEC958 CS8427 Input Status",
+        .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+        .get =          snd_cs8427_in_status_get,
+        .private_value = 15,
+},
+{
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .info =         snd_cs8427_in_status_info,
+        .name =         "IEC958 CS8427 Error Status",
+        .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+        .get =          snd_cs8427_in_status_get,
+        .private_value = 16,
+},
+{
+        .access =       SNDRV_CTL_ELEM_ACCESS_READ,
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
+        .info =         snd_cs8427_spdif_mask_info,
+        .get =          snd_cs8427_spdif_mask_get,
+},
+{
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
+        .info =         snd_cs8427_spdif_info,
+        .get =          snd_cs8427_spdif_get,
+        .put =          snd_cs8427_spdif_put,
+        .private_value = 0
+},
+{
+        .access =       SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
+        .info =         snd_cs8427_spdif_info,
+        .get =          snd_cs8427_spdif_get,
+        .put =          snd_cs8427_spdif_put,
+        .private_value = 1
+},
+{
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .info =         snd_cs8427_qsubcode_info,
+        .name =         "IEC958 Q-subcode Capture Default",
+        .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+        .get =          snd_cs8427_qsubcode_get
+}};
+
+int snd_cs8427_iec958_build(snd_i2c_device_t *cs8427,
+                            snd_pcm_substream_t *play_substream,
+                            snd_pcm_substream_t *cap_substream)
+{
+        cs8427_t *chip = cs8427->private_data;
+        snd_kcontrol_t *kctl;
+        unsigned int idx;
+        int err;
+
+        snd_assert(play_substream && cap_substream, return -EINVAL);
+        for (idx = 0; idx < ARRAY_SIZE(snd_cs8427_iec958_controls); idx++) {
+                kctl = snd_ctl_new1(&snd_cs8427_iec958_controls[idx], cs8427);
+                if (kctl == NULL)
+                        return -ENOMEM;
+                kctl->id.device = play_substream->pcm->device;
+                kctl->id.subdevice = play_substream->number;
+                err = snd_ctl_add(cs8427->bus->card, kctl);
+                if (err < 0)
+                        return err;
+                if (!strcmp(kctl->id.name, SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM)))
+                        chip->playback.pcm_ctl = kctl;
+        }
+
+        chip->playback.substream = play_substream;
+        chip->capture.substream = cap_substream;
+        snd_assert(chip->playback.pcm_ctl, return -EIO);
+        return 0;
+}
+
+int snd_cs8427_iec958_active(snd_i2c_device_t *cs8427, int active)
+{
+        cs8427_t *chip;
+
+        snd_assert(cs8427, return -ENXIO);
+        chip = cs8427->private_data;
+        if (active)
+                memcpy(chip->playback.pcm_status, chip->playback.def_status, 24);
+        chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+        snd_ctl_notify(cs8427->bus->card, SNDRV_CTL_EVENT_MASK_VALUE |
+                                          SNDRV_CTL_EVENT_MASK_INFO, &chip->playback.pcm_ctl->id);
+        return 0;
+}
+
+int snd_cs8427_iec958_pcm(snd_i2c_device_t *cs8427, unsigned int rate)
+{
+        cs8427_t *chip;
+        char *status;
+        int err, reset;
+
+        snd_assert(cs8427, return -ENXIO);
+        chip = cs8427->private_data;
+        status = chip->playback.pcm_status;
+        snd_i2c_lock(cs8427->bus);
+        if (status[0] & IEC958_AES0_PROFESSIONAL) {
+                status[0] &= ~IEC958_AES0_PRO_FS;
+                switch (rate) {
+                case 32000: status[0] |= IEC958_AES0_PRO_FS_32000; break;
+                case 44100: status[0] |= IEC958_AES0_PRO_FS_44100; break;
+                case 48000: status[0] |= IEC958_AES0_PRO_FS_48000; break;
+                default: status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
+                }
+        } else {
+                status[3] &= ~IEC958_AES3_CON_FS;
+                switch (rate) {
+                case 32000: status[3] |= IEC958_AES3_CON_FS_32000; break;
+                case 44100: status[3] |= IEC958_AES3_CON_FS_44100; break;
+                case 48000: status[3] |= IEC958_AES3_CON_FS_48000; break;
+                }
+        }
+        err = snd_cs8427_send_corudata(cs8427, 0, status, 24);
+        if (err > 0)
+                snd_ctl_notify(cs8427->bus->card,
+                               SNDRV_CTL_EVENT_MASK_VALUE,
+                               &chip->playback.pcm_ctl->id);
+        reset = chip->rate != rate;
+        chip->rate = rate;
+        snd_i2c_unlock(cs8427->bus);
+        if (reset)
+                snd_cs8427_reset(cs8427);
+        return err < 0 ? err : 0;
+}
+
+static int __init alsa_cs8427_module_init(void)
+{
+        return 0;
+}
+
+static void __exit alsa_cs8427_module_exit(void)
+{
+}
+
+module_init(alsa_cs8427_module_init)
+module_exit(alsa_cs8427_module_exit)
+
+EXPORT_SYMBOL(snd_cs8427_create);
+EXPORT_SYMBOL(snd_cs8427_reset);
+EXPORT_SYMBOL(snd_cs8427_reg_write);
+EXPORT_SYMBOL(snd_cs8427_iec958_build);
+EXPORT_SYMBOL(snd_cs8427_iec958_active);
+EXPORT_SYMBOL(snd_cs8427_iec958_pcm);